The Grandstream WP822 is a portable Wi-Fi IP phone intended for use in several businesses and vertical market applications such as retail, logistics, medical, and security. This business-grade Wi-Fi phone has dual-band 802.11a/b/g/n/ac Wi-Fi, a sophisticated antenna design, and roaming. The WP822 combines features, portability, and durability by including an 8-hour talk time, HD voice with dual-MICs, and a programmable push-to-speak button. It has dual-band Wi-Fi, an efficient antenna design, and enhanced roaming capabilities. It supports two SIP accounts and two lines. It has HD voice and a dual MIC design, as well as AEC and Noise Shield Technology. This IP telephone has a 2000mAh rechargeable battery, 8-hour talk time, and 200-hour standby. Bluetooth is included in connecting headphones. It has a push-to-talk button, a Micro USB connector, and a 3.5mm headphone jack. The Grandstream WP822 Wi-Fi IP Phone comes with a 01-year warranty.